A communication method, a terminal device, an access network device, and a core network device are provided. One example method includes: receiving, by a terminal device, first configuration information. The first configuration information is related to a first region and a first signal, the first signal is configured for positioning, and the first region includes a plurality of cells.
Legal claims defining the scope of protection, as filed with the USPTO.
. A communication method, comprising:
. The method of, wherein the plurality of cells include a first cell and a second cell, and the method further comprises:
. The method of, wherein the plurality of cells include a first cell, and the first configuration information includes information specific to the first cell.
. The method of, wherein the information specific to the first cell includes identification information of the first cell.
. The method of, wherein the identification information of the first cell is included in an identification of a cell group, and the cell group includes at least one cell of the plurality of cells, wherein the information specific to the first cell includes the identification of the cell group, and the information specific to the first cell is specific to the at least one cell of the plurality of cells.
. The method of, wherein the information specific to the first cell is related to one or more pieces of following information: a time for transmitting the SRS-Pos, a frequency at which the SRS-Pos is transmitted, or a positional relationship between the terminal device and an access network device.
. The method of, wherein the first configuration information is determined by a core network device.
. The method of, wherein the core network device comprises a location server.
. The method of, wherein the first configuration information configures a transmission resource of the SRS-Pos.
. The method of, wherein the at least one common SRS-Pos parameter comprises at least one of the following: a time-frequency resource configuration of the SRS-Pos, a sequence identifier of the SRS-Pos, a periodicity of the SRS-Pos, an offset amount of the SRS-Pos, or a comb type of the SRS-Pos, or a resource type of the SRS-Pos.
. A communication method, comprising:
. The method of, wherein the plurality of cells include a first cell and a second cell, the method further comprising:
. The method of, wherein the plurality of cells include a first cell, and the first configuration information includes information specific to the first cell.
. The method of, wherein the information specific to the first cell includes identification information of the first cell.
. An apparatus, comprising:
. The apparatus of, wherein the plurality of cells include a first cell, and the first configuration information includes information specific to the first cell.
. The apparatus of, wherein the information specific to the first cell includes identification information of the first cell.
. The apparatus of, wherein the identification information of the first cell is included in an identification of a cell group, and the cell group includes at least one cell of the plurality of cells, wherein the information specific to the first cell includes the identification of the cell group, and the information specific to the first cell is specific to the at least one cell of the plurality of cells.
Complete technical specification and implementation details from the patent document.
This application is a continuation of International Application No. PCT/CN2023/087153, filed on Apr. 7, 2023, the disclosure of which is hereby incorporated by reference in its entirety.
The various embodiments described in this document relate in general to the technical field of communication, and more specifically to communication methods, a terminal device, an access network device, and a core network device.
In the related technologies, there are many problems in uplink positioning. When cell reselection occurs at a terminal device or validity criterion fails, transmission of a first signal for positioning is stopped and a configuration of the first signal is released, which may result in positioning interruption. The first signal may include, for example, a sounding reference signal for positioning (SRS-Pos). If positioning is still required, the terminal device needs to reconnect to the network, so that the network can provide the terminal device with a new configuration of the first signal, which may result in additional power consumption and signaling overhead.
Embodiments of the disclosure provide communication methods, a terminal device, an access network device, and a core network device. The following describes the various aspects of the disclosure.
According to a first aspect, a communication method is provided. The method includes: receiving, by a terminal device, first configuration information. The first configuration information is related to a first region and a first signal, the first signal is configured for positioning, and the first region includes a plurality of cells. The first configuration information is configured to indicate information for configuring the first signal, in response to the terminal device being resided in any cell of the plurality of cells in the first region.
In some embodiments, the plurality of cells include a first cell and a second cell, and the information for configuring the first signal is the same in response to the terminal device being resided in the first cell or the second cell.
In some embodiments, the plurality of cells include a first cell and a second cell, and the method further includes: receiving, by the terminal device, first indication information. The first indication information is configured to indicate whether the information for configuring the first signal is the same in response to the terminal device being resided in the first cell or the second cell.
In some embodiments, the first configuration information includes information common to the plurality of cells.
In some embodiments, the plurality of cells include a first cell, and the first configuration information includes exclusive information specific to the first cell.
In some embodiments, the exclusive information includes identification information of the first cell.
In some embodiments, the identification information of the first cell is included in an identification of a cell group, and the cell group includes at least one cell of the plurality of cells. The exclusive information includes the identification of the cell group, and the exclusive information is specific to the at least one cell of the plurality of cells.
In some embodiments, the exclusive information is related to one or more pieces of following information: a time for transmitting the first signal, a frequency at which the first signal is transmitted, and a positional relationship between the terminal device and an access network device.
In some embodiments, the first configuration information is determined by a core network device.
In some embodiments, the core network device includes a location server.
In some embodiments, the first configuration information is configured to indicate a plurality of pieces of candidate configuration information, and each of the plurality of pieces of candidate configuration information is used to configure the first signal.
In some embodiments, the method further includes: selecting, by the terminal device, one piece of candidate configuration information from the plurality of pieces of candidate configuration information as the information for configuring the first signal.
In some embodiments, the first signal is a sounding reference signal (SRS) for positioning.
In some embodiments, the first configuration information is used to configure a transmission resource of the first signal.
According to a second aspect, a communication method is provided and includes: transmitting, by an access network device, first configuration information to a terminal device. The first configuration information is related to a first region and a first signal, the first signal is configured for positioning, and the first region includes a plurality of cells. The first configuration information is configured to indicate information for configuring the first signal, in response to the terminal device being resided in any cell of the plurality of cells in the first region.
In some embodiments, the plurality of cells include a first cell and a second cell, and the information for configuring the first signal is the same in response to the terminal device being resided in the first cell or the second cell.
In some embodiments, the plurality of cells include a first cell and a second cell, the method further includes: transmitting, by the access network device, first indication information to the terminal device. The first indication information is configured to indicate whether the information for configuring the first signal is the same in response to the terminal device being resided in the first cell or the second cell.
In some embodiments, the first configuration information includes information common to the plurality of cells.
In some embodiments, the plurality of cells include a first cell, and the first configuration information includes exclusive information specific to the first cell.
In some embodiments, the exclusive information includes identification information of the first cell.
In some embodiments, the identification information of the first cell is included in an identification of a cell group, and the cell group includes at least one cell of the plurality of cells. The exclusive information includes the identification of the cell group, and the exclusive information is specific to the at least one cell of the plurality of cells.
In some embodiments, the exclusive information is related to one or more pieces of following information: a time for transmitting the first signal, a frequency at which the first signal is transmitted, and a positional relationship between the terminal device and the access network device.
In some embodiments, the first configuration information is configured to indicate a plurality of pieces of candidate configuration information, and each of the plurality of pieces of candidate configuration information is used to configure the first signal.
In some embodiments, the first configuration information is determined by a core network device.
In some embodiments, the method further includes: transmitting, by the access network device, second indication information to a core network device on condition that the terminal device undergoes cell reselection in the first region. The second indication information is configured to indicate a cell in which the terminal device resides after the cell reselection occurs.
In some embodiments, the second indication information is determined based on following information of the first signal: a timing advance (TA) estimation result, a sequence, a time-frequency position.
In some embodiments, the plurality of cells include a first cell and a second cell, the first cell is a cell in which the terminal device resides before the cell reselection. In the first cell, a time-frequency sequence of the first signal is defined as s, and in the second cell, a time-frequency sequence of the first signal is defined as s. Both sand sare determined based on configuration information. A sequence of the first signal received by the access network device is defined as r, and the second cell is regarded as a cell in which the terminal device resides after the cell reselection on condition that
is satisfied.
In some embodiments, a cell in which the terminal device resides before the cell reselection occurs is a third cell, a cell in which the terminal device resides after the cell reselection occurs is a fourth cell, and the access network device is an access network device corresponding to the third cell or the fourth cell.
In some embodiments, the core network device includes a location server.
In some embodiments, the method further includes: receiving, by the access network device, third indication information. The third indication information is configured to indicate information that has been used to configure the first signal.
In some embodiments, the first signal is a sounding reference signal (SRS) for positioning.
In some embodiments, the first configuration information is used to configure a transmission resource of the first signal.
According to a third aspect, a communication method is provided and includes: determining, by a core network device, first configuration information for a terminal device. The first configuration information is related to a first region and a first signal, the first signal is configured for positioning, and the first region includes a plurality of cells. The first configuration information is configured to indicate information for configuring the first signal, in response to the terminal device being resided in any cell of the plurality of cells in the first region.
In some embodiments, the plurality of cells include a first cell and a second cell, and the information for configuring the first signal is the same in response to the terminal device being resided in the first cell or the second cell.
In some embodiments, the first configuration information includes information common to the plurality of cells.
In some embodiments, the plurality of cells include a first cell, and the first configuration information includes exclusive information specific to the first cell.
In some embodiments, the exclusive information includes identification information of the first cell.
In some embodiments, the identification information of the first cell is included in an identification of a cell group, and the cell group includes at least one cell of the plurality of cells. The exclusive information includes the identification of the cell group, and the exclusive information is specific to the at least one cell of the plurality of cells.
In some embodiments, the exclusive information is related to one or more pieces of following information: a time for transmitting the first signal, a frequency at which the first signal is transmitted, and a positional relationship between the terminal device and the access network device.
In some embodiments, the first configuration information is configured to indicate a plurality of pieces of candidate configuration information, and each of the plurality of pieces of candidate configuration information is used to configure the first signal.
In some embodiments, the method further includes: receiving, by the core network device, second indication information transmitted by an access network device on condition that the terminal device undergoes cell reselection in the first region. The second indication information is configured to indicate a cell in which the terminal device resides after the cell reselection occurs.
In some embodiments, the second indication information is determined based on following information of the first signal: a timing advance (TA) estimation result, a sequence, and a time-frequency position.
In some embodiments, the plurality of cells include a first cell and a second cell, the first cell is a cell in which the terminal device resides before the cell reselection. In the first cell, a time-frequency sequence of the first signal is defined as s, and in the second cell, a time-frequency sequence of the first signal is defined as s. Both sand sare determined based on configuration information. A sequence of the first signal received by the access network device is defined as r, and the second cell is regarded as a cell in which the terminal device resides after the cell reselection on condition that
is satisfied.
In some embodiments, a cell in which the terminal device resides before the cell reselection occurs is a third cell, a cell in which the terminal device resides after the cell reselection occurs is a fourth cell, and the access network device is an access network device corresponding to the third cell or the fourth cell.
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March 17, 2026
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